How do you fix a toilet when the reservoir doesn't stock up? I'm not sure what the problem is, but we've had below not...

I'm not sure what the problem is, but we've had below not anything weather the last few days, and immediately the toilet in the vault bathroom won't refill. Could it be a frozen pipe? If so will the pipe burst as it thaw?
Answers:    Sounds like a frozen pipe if it be working normally and consequently quit during a cold spell. The pipe will be damaged by the freezing and consequently if the pipe is split, it will start to leak as the rime plug thaws. Pipes don't other crack when frozen so there is hope.
sounds approaching it is probably frozen. it would have probably burst already if it be going to. you should try to get some roast down there soon though to obtain it thawed out.